Silver and gold are chosen as contact materials for this telecom relay mainly based on the superb performance of these two metals in electrical contact and conduction. Here are the specific reasons:
Performance of silver:
Good conductivity: Silver is recognized as one of the metals with the electrical conductivity, which makes its contact resistance extremely low, which helps to maintain the stability and accuracy of the telecom relay during signal transmission.
Good wear resistance: Silver-based alloy electrical contact materials have high hardness and wear resistance, and can maintain good stability under high temperature, high pressure and high speed working conditions.
Good contact reliability: Silver-based alloy electrical contact materials ensure reliable connection between contact points due to their good conductivity, wear resistance and high temperature performance, reducing failures caused by poor contact.
Performance of gold:
Corrosion resistance: Gold has superb stability in the air, is not easy to oxidize, and can maintain its electrical properties under various environmental conditions.
Low contact resistance: Although the conductivity of gold is slightly inferior to that of silver, it is still a very good conductor, which can ensure low resistance loss of telecom relays during signal transmission.
Applicable to low-current electrical appliances: In low-current electrical appliances such as relays, precious metals such as gold, molybdenum, and platinum are often used to make contacts to enhance their electromechanical life.
Advantages of the combination of silver + gold:
Comprehensive performance improvement: The conductivity of silver ensures the efficiency and accuracy of telecommunications relays during signal transmission. When the signal is transmitted inside the relay, the resistance encountered is small, thus ensuring the integrity and real-time nature of the signal. The addition of gold further enhances the corrosion resistance of the contact material. Gold has superb stability in the air and can resist erosion by various environmental factors, such as oxidation and corrosion. This corrosion resistance enables telecommunications relays to maintain the stability of their electrical performance in various harsh working environments.
Applicable to specific application scenarios: Telecommunications relays need to frequently perform signal transmission and switching operations. In this application scenario, there are extremely high requirements for the electrical performance and reliability of the relay. The material combination of silver and gold is designed to meet this specific demand. Long-term, high-frequency working conditions pose severe challenges to the electrical performance of telecommunications relays. However, the combination of silver and gold ensures that the relay can still maintain stable electrical performance under such conditions. The low contact resistance of silver ensures efficient and accurate signal transmission, while the corrosion resistance of gold ensures that the relay can work properly under various environmental conditions. In addition, the combination of silver and gold also has good mechanical properties and wear resistance. The contact points of the telecommunications relay are not easily worn during frequent switching operations, thereby extending the service life of the relay. This is undoubtedly an important advantage for telecommunications equipment that needs to operate for a long time and at a high frequency.
In summary, the choice of silver and gold as the contact material of this telecommunications relay is to ensure stable and reliable electrical performance while improving the corrosion resistance and service life of the relay to adapt to various complex working environments.